Bhine



106. COMPOSITIONS,

COATING R PLASTIC;

. UNITED STATES CARI: GBUNZWElGiAND PAUL HARTMANN, OF LUDWIGSHAFEN-ON-THE- I I A I I RHINE,GERMAN-Y.

ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent No. 247,636, dated September 27, 1881.

Application filed June 23, 1881. (Specimens) Patented in England November 16, 1880, in France January 23. 1881, in Belgium 7 February 15, 1881, and in Germany April 28, 1881.

To all whom it may concern Be it known that we, CARL GRI'JNzwEIG and PAUL HARTMANN, both of Ludwigshafen-out-he-Rhine, Germany, have invented a new and useful Composition of Matter to be Used in the Manufactureot Artificial Stone, of which the following is a specification.

The object of our invention is to provide a new and improved brick or stone which is 10 light but strong, and is especially adapted for partitions in upper stories which are not supported by a lower partition.

In carrying out our invention we mix the following ingredients, in the proportions given,

viz: ulverized cork eight pailtls, by 1weight; c a and and cement nine an a ha f parts, )5 weight; hvdraie oi lime three parts, by weight; soluble glass, one and a half part, by weight, an a sni e quantity of hair and fib r for binding purposes and enoug water 0 make the mass plastic.

The cork is disintegrated or reduced by any suitable means. The hair can be replaced by o hersnit lefibrou n r rial. Thismixbricks, which are finished and hardened by drEing them in the air. clay serves-to prevent the lime from separating from the cork, and the solu bleglas s serves chiefly to protect the various compoo nents from dampness and decay, and to form Wwhicn add to the strength of e brick.

The hair or other fibers binds the material together while'dryin'gf" 3 5 Having thus fully described our invention,- we claim as new and desire to secure by Let ters-Patent- An artificial stoneforrned of pulverized cork, clay, sand, and w hydrate oj lime, solii- 4o bio lass, hair, and water, in abdl'ft the proportlons specified.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

DR. 0. GRUNZWEIG.

- PAUL HARTMANN.

Witnesses:

XAVER BIEBER,

ture is pressed into utable molds to form KETH PEH. 

